Page 14 - teammishi

Stock Cold-Side Features

We had it pretty easy during the design phase of our hot-side intercooler pipe. A simple design with relatively common features, not overly complicated. The cold-side is a different story.

Stock Fiesta ST charge pipe

As you can see, this pipe features a few complex pieces and also follows an unusual path. On the right side at the top of this image, you can see the end of the pipe that mates to the intercooler coupler and hose. This portion of the pipe also houses a pressure sensor, a mounting bracket, and a vacuum-line port.

You may have seen our R&D post on the full Fiesta ST intake, but this one is a little different. We are developing a silicone induction hose as solution for drivers of mainly stock Fiestas who don't want to replace their entire intake system. The stock rubber hose can be restrictive due to its shape and size. We believe that by creating a more free-flowing alternative we could see some substantial benefits without heavy modification to the Fiesta.

Stock Fiesta ST parts in the engine bay

First we examined the features of the stock hose. Aside from a barb fitting, the hose has a fairly straightforward design. The stock hose has quite a few ridges and flex sections throughout, not to mention a small inner

Interested in purchasing our 6.0L intake elbow?

We have quite a bit going on with this project! Our discounted pre-sale has launched, and we are currently accepting orders. In addition, our final prototype elbows arrived and have been test fitted to ensure appropriate fitment. Without further delay, let's take a look at our finished intake elbows.

Final Product Images

First, a lineup of the stock elbow next to our three finish options.

Stock 6.0 intake elbow (left) and three Mishimoto intake elbows, final prototypes

Time for another update on our intercooler project! Last time we left off with a foam intercooler core and some cool 3D-printed end tanks. This update is a bit more exciting!

Mock Up Prototype

With both the tanks printed and our core cut to shape, we could mate these pieces to check fitment of our existing design.

Prototype Ford Fiesta ST intercooler assembled

The tanks feature the mounting pegs and brackets to attach the cooler to the radiator and support.

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Interested in picking up our NB Miata oil cooler kit? Check out our discounted pre-sale linked below.

Mishimoto 1999-2005 Mazda Miata Oil Cooler Kit Pre-Sale!

During the previous articles we mentioned that we would be conducting experiments for the stock oil cooler/warmer. Myths and claims exist regarding its impact on the heating of engine oil as well as its impact on cooling. We decided to check out both sides of the spectrum and support them with some actual data. First up, warm-up speed both with and without the stock heat exchanger.

Testing Setup

Setting up the sensors and equipment for this test was relatively simple. For testing the system with the stock heat exchanger in place, we simply installed our oil sensor adapter below the filter and then installed our temperature sensor. Below is a look at the sensor adapter.

In our last post we took a look at the stock Fiesta ST downpipe as well as our slotted flange design based on the stock flange. We are still planning to create both a catted downpipe and a non-catted downpipe for race applications, so let's take a look at the progress!

Downpipe Design

After fitting the flange to the turbo, we began to piece together the rest of the downpipe coming off the flange and meeting with the exhaust. Both our designs feature a slotted flange that bolts to the turbo, in addition to a flex pipe near where they meet with the exhaust. This is important because the entire exhaust system will move a bit, and we need a flex point to allow for this. Not allowing room for flex in the downpipe would most certainly harm your exhaust system and possibly the turbo itself.
We began by laying out the components of our prototype next to the stock Fiesta ST downpipe for comparison. Check out some shots below!

Our engineering team often tackles complex problems to provide ideal solutions for customers. This is true for all our product lines, across a broad range of vehicle makes and models. We are not strangers to Ford's lineup of EcoBoost models, and our team is quite familiar with the issues that exist for each. In general, we've found that the stock liquid cooling systems are not handling the abuse from heavy-footed ST (Fiesta, Focus) and Mustang owners. Each model shows deficiencies in coolant heat transfer, rising oil temperatures, and power-crippling heat-soak.

In our effort to solve each problem, we've started a ton of awesome projects, performed unique testing, and we've had a blast working with the EcoBoost community. Now, we turn our attention to the Focus ST radiator. This component has become the elephant in the room, if the room were the paddock at the track. All around the world, Focus owners are hitting the track expecting a fun day of battles against physics, rev-match downshifts,

Time to dive into yet another Fiesta ST project! This little Fiesta is getting the royal treatment at Mishimoto; over the last few months it has been fitted for numerous upgrades. If you are in the mood for a recap, you can check out some of the other Fiesta posts here on the Mishimoto blog. For now we'll dive right into our development of Mishimoto's expansion tank for the Fiesta ST.

Stock Expansion Tank

Here at Mishimoto we feel a certain type of way about plastic. It is not that we have a vendetta against plastic, but we see an area where we can improve upon some of the stock Fiesta ST parts. Plastic expansion tanks in general (or any plastic parts) are more prone to failure than an aluminum part would be. Plastic becomes brittle with age, exposure to elements, and the repeated heat cycles in the engine bay. Replacing the plastic tank with an aluminum one not only looks better, but it also would be less prone to bursting or cracking especially as the

We've discussed R&D for many of our typical product segments for the Fiesta ST. These include our in-progress aluminum radiator, our already released catch can kit and oil cooler solution, as well as our nearly complete intake system and exhaust components (both cat-back and downpipe). Our company is also known for its strong line of heat exchangers, so we certainly need to see what can be done about the undersized stock intercooler on the Fiesta.

Heat is a big enemy of the Fiesta, as many have already discovered during track driving. High oil temperatures, high coolant temperatures, and a heat-soaked intercooler all commonly occur after short periods of aggressive driving. We've been actively tackling both the coolant and oil temperature concerns in other development threads, but now it's time to lower the intake temperatures with an upgraded intercooler.

Stock Intercooler Evaluation

You've probably seen the stock Ford Fiesta ST intercooler on